Merge pull request stelligent#330 from stelligent/minor-logic-fix-in-…

…upsert

Correctly warn if program version unparsable

update CHANGELOG for v1.5.3

fix stelligent#327 for realz

update CHANGELOG for v1.5.2

add missing role to manage schedules

update CHANGELOG for v1.5.1

set stack timeout to 60 mins

complexity constraint

add AWS_REGION

update CHANGELOG for v1.4.5